Valve for engines.



Patented Iuly 4, 1899.

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frm/6 I l l l l I I IL mw f 2W y m @i L 9 UNITED STATES HARRY L. IDE, OF SPRINGFIELD, ILLINOIS, -ASSIGNOR TO A.'L. IDE d; SONS,

PATENT OFFICE.

OF SAME PL ACE.

VALVE FOR ENGINES.

v SPECIFICATION forming part 0f Letters Patent No. 628,179, dated July 4, 1899.

`Application led November 14, 1898. Serial No. 696,420. (No model.) I

To LZZ whom, t may concern:

Beit known that I, HARRY L. IDE, a citizen of the United States, residing at Springfield, in the county of Sangamon and State of Illi` nois,have invented a certain new and useful Improvementin Valves for Engines, (Case No.

2,) of which the following isla full,clear, con` cise, and exact description.

My invention relates to fluid-pressure engines, and particularly to the valve mechanism'employed therein. l

My invention is primarily adapted for use in steam-engines employing balanced slidevalves for controlling the admission and eX- haust of steam to and from the steam or operating cylinder.

The invention, generallyspeaking, consists in a valve and valveactuating rod suitably connected with a moving portion of the engine, as the eccentric, said actuating-rod having an engagementwth thevalve which permits relative movement between the rod or actuating part and the valve to compensate for any irregularity in the construction of the y valve mechanism to prevent any of the parts of the valve mechanism from binding.

In the preferred embodiment of the invention I employ a slide-valve and a rod for actuating the same, two offsetsl or abutments being preferably employed and secured, preferably, to theA actuating-rod, the offsets or abutments engaging the slide-valve, preferably at the ends thereof, the engagement permitting a relative movement between the actuating-rod and the valve in a direction transverse to the line of travel of the valve, so that although the actuating-rod may not travel in a true direction,owing, for example, to a relative displacement of the stuffing-boxes through which the rod passes, there will be no tendency for the valve-rod to shift the valve from its line of travel, whereby the binding engagement between moving parts of the valve mechanism is absolutely prevented. Furthermore, by providing an abutment or abutments which do not rigidly connect the valve and valve-rod it is not necessary to'take as much care in adjusting the valve parts as was necessary heretofore.

I am aware that it is old in the art to provide a valve-rod in a valve-chamber and to connect the same with a slide-valve by means of an offset or Spanner; but the connection between the valve-'rod and the valve has been rigid in construct-ions devised prior to my present invention, so that if for any reason the valve-rod should be changed from its proper direction of travel the valve also will tend to travel parallel with the valve-rod, so that an injurious binding engagement between movable parts of the valve mechanism is llikely to be brought about. Slide-valves having actuating-rods engaged therewith through the medium of span ners are provided for the purpose of making as direct a connection as may be desirable of the valve-rod with a moving part of the engine, as an eccentric, and at the same time making the ports as short as desirable, the distance between thevalve and rod varying according to the length of the ports, the spanners being of sufiioient length to form connection between the valve and rod.

I will explain my invention more` particularly by reference to the accompanying drawings', illustrating one embodiment thereof.l

In the drawings, Figure l is a sectional view through the axis of the valve-rod, certain parts being shown in complete elevation. Fig. 2 is a plan View of the valve. Fig. 3 is a plan view of the pressure-plate. Fig. 4 is an end view of the valve. Fig. 5 is a crosssectional View of the pressure-plate, and Fig. 6 is a perspective view of an arm or abutment carried by the valve-rod for actuating the valve.

Like letters indicate like parts throughout the different figures.

The ports a a, leading from the steam-chest b to the operating or steam cylinder, and the .exhaust-port c are of well-known construction and arrangement and need not further be described. The valve d travels between a transversely-movable pressure-plate c and the valve-seat, the construction being such as to prevent any pressure on the valve, excepting that due to its own Weight. The spiral springs e on the back of the pressureplate maintain the valve and pressure-plate in position. I f, however, any water should accumulate within the cylinder, the springs will'yield and permit the water-to escape through the ports. These features and characteristics of balanced slide-valves are well known. t

In the embodiment of the invention herein shown are provided two extensions d d,pro-

jecting from the ends ofthe valve, wings cl2 cl2 being provided upon opposite sides of each extension. ably connected with a moving part of the engine, as an eccentric, the valve-rod extending through stuffing-boxes ff' and passing through the steam-chest, the stuffing-boxes serving to guide the valve-rod in its travel. In this particular instance I have provided an opening e2 in an enlargement of the pressure-plate, the reciprocating valve-rod passing through the opening, which opening is elongated in a direction perpendicular to the valve-seat to permit the pressure-plate to move in a direction transverse to the axis of the valve-rod, the pressure-plate being lifted upon the expulsion of water through the admission-ports. 'In this instance I have provided two abutments g g, which are adjustably secured to the valve-rod by clampingsleeves g', preferably formed integrally with the abutments. The free ends of the abutments engage the extensions d d, the wings d2serving to prevent the abutments from being appreciably rotated upon the valve-rods, whereby engagement between the abutments and extensions is maintained. It will be seen that the engagement that I have provided bet-ween the reciprocating rod or portion fand the valve is such a one as to permit of relative movement between the valve and rod in a transverse direction. It will be seen that the valve-rod fis entirely independent of the valve, as it does not form any part of the valve, nor does it modify or affect the flow of steam through the openings in the valve. It is apparent that the abutments are capable of movement transversely to the direction of travel of the slide-valve if the lines of travel of the valve-rod and valve are not exactly parallel, so that the valve will not be injured if the valve-rod should not travel in a direction exactly parallel with the valve.

The parts g, interposed between the valve and rod, constitute one form of spanning device that may be employed. 1

I do not wish to be limited to the construction in which the angularly-disposed parts d g are movable with relation to each other.

While I have shown two abutments and have shown the abutments mounted u pon the valve-rod, I do not wish to be limited to the number of abutments employed or to their precise disposition. 1

While I have herein shown and particularly described one embodiment of the invention, I do not wish to be limited to the precise construction shown, as modifications may be made without departing from the spirit of my invention; but, y

Having described my invention, I claim as new and desire to secure by Letters Patentl. In a balanced valve for engines, the combination with a sli de-valve,of a pressure-plate, the valve being disposed between its seat and the pressure-plate, a reciprocating rod or portion,abutments g g upon said rod,and pins d d A valve or actuating rodfis suitinterposed between the end of the valve and said abutments, substantially as described.

2. In a balanced valve for engines, the combination with a slidevalve,of a pressure-plate, the valve being disposed between its seat and the pressure-plate, a reciprocating rod or portion and portions d' g intervening between each end of the valve and the said rod, the portions d d extending toward the valve and intervening between the ends thereof and the portionsg g which engage the rod,whereby the valve may be driven from its ends without interference from the pressure-plate, the said parts intervening between the rod and valve permitting of the movement of the latter transversely to the rod,'snbstantially as described.

In a balanced valve for engines, the combination with a slide-valve, of a transverselymovable pressure-plate, the valve being disposed between its seat and the pressureplate, and a reciprocating rod independent of the valve having engagement with the valve for reciprocating the same, said engagement permitting of a relative movement between the valve and rod in a direction transverse to the line of travel of the rod, substantially as described.

In a balanced valve for engines, the combination with a slide-valve, of a transverselymovable pressure-plate, the -valve being disposed between its seat and' the pressureplate, a reciprocating rod f independent of the valve, and means foi-'engaging each end of the valve with said rod, said means permitting of a relative movement between the rod and valve in a direction transverse to the line of travel of the rod, substantially as described.. l

5. In a balanced valve for engines, the combination with a slide-valve, of a transverselymovable pressure-plate, a reciprocating rod independent of the valve for reciprocating the valve, and a spanning device intervening between the rod and valve and aiording an engagement between the valve and rod permitting of a relative movement between the valve and rod in a direction transverse to the line of travel of the rod, substantially as described.

6. In a balanced valve for engines, the combination with a slide-valve, of a transverselymovable pressure-plate, a reciprocating rod independent of the valve for reciprocating the valve, and spanners intervening between the rod and the ends of the valve and aording an engagement between the valve and rod permitting of a relative movement between the valve and rod in a `direction transverse to the line of travel of the rod, substantially as described.

In witness whereof Ihereunto subscribe my name this 11th day of November, A. D. 1898.

HARRY L. AIDE.

IVitnesses:

EDWD. RIDGELY, WM. RINGLEY.

IOO 

